Plot ideas.

1. Boat trip with a group of friends including boyfriend and ex boyfriend with his girlfriend.
2. Her fiance's ex wife shows up at the engagement party trying to win him back and cause a scene.
3. A camping trip with her boyfriend, her best friends girlfriend and later her best friend discovers her boyfriend has been hitting her.
4. Starts her new job at an office and discovers she works in the same building as her ex husband and his new wife.
5. Goes to her ex's wedding.
6. Goes on a double date with her best friend.